45 citations · 114 across the 14 of their papers we have counts for
8 papers · 1 filter
Further Properties and Applications of Koszul Pairs
Adrian Manea, Dragoş Ştefan
Koszul pairs were introduced in [arXiv:1011.4243] as an instrument for the study of Koszul rings. In this paper, we continue the enquiry of such pairs, focusing on the description…
On de Rham Cohomology of Linear Categories
Andrei Chiteş, Mădălin Ciungu, Dragoş Ştefan
We define the Chern map from the Grothendieck group of a linear category C to the de Rham cohomology of C with coefficients in a DG-category. In order to achieve our goal, we defin…
Koszul pairs and applications
Pascual Jara Martínez, Javier López Peña, Dragoş Ştefan
Let be a semisimple ring. A pair is called almost-Koszul if is a connected graded -ring and is a compatible connected graded -coring. To an almost-Koszul…
A categorical approach to cyclic duality
Gabriella Böhm, Dragos Stefan
The aim of this paper is to provide a unifying categorical framework for the many examples of para-(co)cyclic modules arising from Hopf cyclic theory. Functoriality of the coeffici…
Coactions on Hochschild Homology of Hopf-Galois Extensions and Their Coinvariants
Abdenacer Makhlouf, Dragos Stefan
Let A be an H-Galois extension of B. If M is a Hopf bimodule then HH.(A,M), the Hochschild homology of A with coefficients in M, is a right comodule over the coalgebra C:=H/[H,H].…
Examples of para-cocyclic objects induced by BD-laws
Gabriella Böhm, Dragos Stefan
In a recent paper arXiv:0705.3190, we gave a general construction of a para-cocyclic structure on a cosimplex, associated to a so called admissible septuple -- consisting of two ca…